Thunderstorms are developing south-southwest of San Diego County and could move into the region later today, producing isolated showers from the Laguna Mountains to Mt. Palomar, says the National Weather Service. There's also a chance that the thunderstorms will move into some inland valleys, bringing showers to areas like Poway and El Cajon.

It's warm across the county; the temperature hit 77 today at Lindbergh Field in San Diego. That's the highest it has been since a reading of 81 on July 16th.

"Southwest California will remain on the western fringes of a minor influx of monsoonal moisture through tonight," the weather service says in an advisory. "This will bring a chance of afternoon and early evening thunderstorms in the mountains and deserts. A trough of low pressure moving inland to the north will bring slow drying of the monsoonal moisture for Wednesday through the end of the week."

Conditions were quite different on Monday. The high in Oceanside Harbor was 65 degrees, the "lowest maximum" temperature for Aug. 16th since 1993. The previous record was 66. And El Cajon recorded an overnight low of 58, which was the lowest minimum temperature on Aug. 16th since 1982. The previous record was 59.

At 7 a.m., the water temperature at Mission Beach was a chilly 61 degrees.

History: On this day in 2001, says the weather service, a funnel cloud was spotted in Dulzura

Scripps Pier cam

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